VIDEO : Kim Kardashian Joins Jennifer Lopez for Her 47th Birthday Celebration in Las Vegas

A video posted by Kim Kardashian Snapchats (@kimksnapchats) on Jul 24, 2016 at 2:10am PDT The only person more excited for Jennifer Lopez 's 47th birthday than herself was probably Kim Kardashian . The E! reality star jetted off to Las Vegas over the weekend for a girls' trip, and as fate would have it, she had the lucky opportunity to present the birthday girl with a massive cake. An inside source tells E! News the impromptu party took place after Jennifer's sold-out residency show at Planet Hollywood, which Kardashian attended alongside multiple girlfriends and rapper French Montana .